Installation & User Manual
MGD 221 MKII
Medical Greyscale
Display
V599327/Rev. 00
November 2001
BarcoView
Theodoor Sevenslaan 106
8500 Kortrijk, Belgium
Phone: +32(0)56 23 32 44
Fax: +32(0)56 23 33 74
E-mail: [email protected]
http://www.barcoview.com
BarcoView Inc
3059 Premiere Parkway
Duluth, Georgia, 30097,USA
Phone: +1 678 475 8000
Fax: +1 678 475 8100
E-mail: [email protected]
http://www.barcoview.com
BarcoView LTD
16F-1, Cheng Loong Plaza 33, Min Sheng Road
Section 1, Pan Chiao, Taipei Hsien, Taiwan, R.O.C.
Phone: +886 2 2957 8357
Fax: +886 2 2957 4080
MGD 221 User's Guide 3
© 2001 BARCO nv. All rights reserved.
Trademark information
TrueGrey, MediCal, BarcoMed, and MeDis are registered trademarks
of BARCO NV.
Windows NT is a registered trademark of Microsoft Corporation.
MGD 221 User's Guide 4
MGD 221 User's Guide 5
Regulations
• This apparatus conforms to: IEC601-1,
UL2601-1, cUL2601-1, EN 60601-1
• This apparatus is classified as Type B
without Applied Part.
Usage in Hazardous locations
• Class I equipment
• Equipment not suitable for use in the
presence of a flammable anaesthetic
mixture with air or with oxygen or nitrous
oxyde.
FCC notice
This equipment has been tested and found
to comply with the limits of a class A digital
device, pursuant to Part 15 of the FCC rules.
These limits are designed to provide
reasonable protection against harmful
interference when the equipment is operated
in a commercial environment. This equipment
generates, uses and can radiate radio
frequency energy and, if not installed and
used in accordance with the instruction
manual, may cause harmful interference to
radio communications. Operation of this
equipment in a residential area is likely to
cause harmful interference in which case the
user will be required to correct the interference
at his own expense.
Power connection
• Power cord: Utilise a UL-listed detachable
power cord, 3-wire, type SJ or equivalent, 18
AWG min., rated 300 V min., provided with a
hospital-grade type plug 5-15P configuration
for 120V application, or 6-15P for 240V
application.
• Warning: This apparatus must be earthed!
• Power requirements: connect the apparatus
SAFETY INSTRUCTIONS
• Read the safety and operating instructions
before operating the apparatus.
• Retain safety and operating instructions for
future reference.
• Adhere to all warnings on the apparatus
and in the operating instructions manual.
• Follow all instructions for operation and
use.
to an AC voltage as indicated at its back.
Using a lower voltage, the apparatus will not
be able to operate. Using a higher voltage
may damage the apparatus.
If you are not sure of the type of power
supplied, consult the power company.
• Do not overload wall outlets and extension
cords as this may result in fire or electric
shock.
• Mains lead protection (U.S.: Power cord):
Supply cords should be routed so that they
are not likely to be walked upon or pinched by
items placed upon or against them, paying
particular attention to cords at plugs and
receptacles.
Water and moisture
• Never expose the apparatus to rain or
moisture.
• Never use the apparatus near water - e.g.
near a bathtub, washbasin, swimming pool,
kitchen sink, laundry tub or in a wet basement.
Ventilation
• Do not cover or block the ventilation openings
in the cover of the set. When installing the
apparatus in a cupboard or another closed
location, heed the necessary space between
the set and the sides of the cupboard.
Installation
• Place the apparatus on a flat, solid and
stable surface that can bear the weight of at
least 3 monitors. If you use an unstable cart
or stand, the set may fall, causing serious
injury to a child or adult, and serious damage
to the equipment.
More warnings in the Installation chapter.
MGD 221 User's Guide 6
MGD 221 User's Guide 7
CONTENTS
1. Introduction ..................................................................................................... 9
1.1 Overview .................................................................................................. 9
Resolution and bandwidths ....................................................................... 9
The memory system .................................................................................. 9
Image conformity and consistency ............................................................ 9
Calibration and adjustments ...................................................................... 9
Power saving system............................................................................... 10
1.2 Versions and options.............................................................................. 10
1.3 About the manuals ................................................................................. 10
2. Installation..................................................................................................... 11
2.1 Precautions ............................................................................................ 11
2.2 The package contents............................................................................ 11
2.3 Controls and connectors ........................................................................ 12
2.4 Signal connection................................................................................... 13
a) Connection of video signals ................................................................ 13
b) Connection of data signals .................................................................. 14
c) Connection of optical sensor ............................................................... 14
d) Connection of power............................................................................ 15
2.5 Positioning the display ........................................................................... 15
Important considerations.............................................................................. 16
3. Operation: User controls............................................................................... 17
3.1 Switching on / off .................................................................................... 17
3.2 Contrast and brightness control ............................................................. 18
3.3 Viewing Status information..................................................................... 20
3.4 Other adjustments .................................................................................. 21
4. Advanced settings and Adjustments (For service staff only)........................ 22
4.1 Settings .................................................................................................. 22
4.2 Adjustments............................................................................................ 24
a) How to make the adjustments ............................................................. 24
b) Description of the adjustments ............................................................ 24
Geometry............................................................................................. 24
Focus................................................................................................... 30
ALC (optional) ..................................................................................... 30
Factory reset ....................................................................................... 31
c) How to save changes .......................................................................... 31
5. Maintenance ................................................................................................. 32
6. Troubleshooting ............................................................................................ 33
Appendix A:Background information ................................................................ 34
Luminance Uniformity Correction ............................................................ 34
Power saving system............................................................................... 34
Appendix B: Technical specifications ............................................................... 36
MGD 221 User's Guide 8
Introduction 9
1. INTRODUCTION
1.1 Overview
Resolution and bandwidths
The BARCO MGD 221 is a high resolution, greyscale portrait display.
Its outstanding visual performance, combining a 2 MegaPixel
resolution with a high brightness, makes it ideal for medical imaging
and many other medical and scientific applications.
The MGD 221 is compatible with any AC power system worldwide
and automatically synchronizes to a wide range of sync frequencies.
Its high-speed video amplifier supports pixel clocks up to 250 MHz.
The memory system
The internal memory system can contain the adjustments for 8
different scanning formats, the so-called scanning modes. Each
scanning format is characterized by its sync signals. The display’s
internal micro controller continuously samples the connected sync
signals and compares them to the scanning modes already stored in
the memory. If the connected signal has already been stored, the
micro controller adapts the image to the corresponding adjustment
values in the memory, and further adjustments are unnecessary.
Image conformity and consistency
Image conformity and consistency are the keywords. In our factory,
the MGD 221 displays are perfectly adjusted and calibrated before
they are shipped to the customer. Internal circuits, like the TrueGrey®
and Automatic White Stability (AWS) systems, ensure display
consistency over time.
Conformity with the original image quality is guaranteed by the
automatic calibration, which can be done by means of an optical
sensor, connected to the Sensor connector on the display. The
sensor is not supplied with the display.
Calibration and adjustments
The conformity calibration, as well as the complete adjustment of the
display, can be performed by means of the remote, user-friendly
MediCal
®
software package. MediCal, is especially developed to
adjust and check BARCO’s medical displays.
Introduction 10
A lot of adjustments can also be done on the monitor itself, by means
of an extensive on-screen menu system, accessible from the rear
panel controls.
Power saving system
The MGD 221 is equipped with a power saving system.
When left idle for a certain time, the computer, connected to the
display, will power down the display in several steps. The power
saving system can be switched on or off during the installation or
adjustment of the display.
This system requires a computer imaging board that supports power
saving management.
1.2 Versions and options
The MGD 221 comes in 2 different versions: With an anti-reflective
panel in front of the picture tube, and without panel (No Panel
version).
In both cases, the phosphor is a B4-L8 type.
The type of CRT phosphor and the presence of the coating are
indicated on the label at the rear of the display.
The video input is terminated to 75 Ohm.
Important: It is absolutely necessary that the impedances of imaging
board and display are the same. If not, the image quality will be
inferior.
The MGD 221 can be delivered with the following options: Southern
Hemisphere Compensation and Ambient Light Compensation (ALC).
The MediCal software and the X-Rite DTP92 sensor are not delivered
with the display.
MediCal can be ordered separately.
1.3 About the manuals
This guide is meant for people who want to install and use the MGD
221 display, as well as people who need to install and adjust the
display. The chapter "Advanced Adjustments" is meant for trained
engineers only, because it describes actions and procedures that
require a technical skill to be performed properly.
The use of the software MediCal is described in the MediCal User’s
Manual.
Installation 11
2. INSTALLATION
2.1 Precautions
• Keep your original packaging. It is designed for this display and is
the ideal protection during transport.
• Do not lift the display all by yourself to avoid injury.
• Avoid reflections in the picture tube to reduce eye strain.
• Place the display on a strong and stable table or desk if used as
desktop display.
• Keep the display away from heat sources and provide enough
ventilation in case it is built in a rack or console.
• Keep the display away from strong sources of magnetic fields.
• Make sure the display and computer are both switched off before
connecting the signals.
2.2 The package contents
• The MGD 221 display
• The accessory box (in which you found this manual)
Notes:
• The MGD 221 can be part of a complete MeDis
®
system,
consisting of the display itself, an imaging board and software. In
that case, the package contains a lot more items. The contents of
the package is then described in the manual of the complete
system.
• The ambient light shield inside the accessory box should always
be used during conformity calibration with the X-Rite DTP92
optical sensor.
Installation 12
2.3 Controls and connectors
1
{1} Optical sensor plug
{2} Ambient Light Compensation
(ALC) sensor (optional)
{3} Green power LED
{4} Control knob, combination of a
push button and a turning knob.
The control knob is used for
switching the power on/off, and
selecting and performing functions
in the OSD (on-screen display)
menu.
{5} Remote (RS-232) output
{6} Remote (RS-232) input
{7} Video input
{8} Horizontal / composite sync. input
{9} Vertical sync. input
{10} Power input
{11} Power button
REMOTE OUT
REMOTE IN
VIDEO
HS / CS
VS
2
4
5
6
7
8
9
10
11
3
Installation 13
2.4 Signal connection
a) Connection of video signals
The connected equipment must comply to all relevant safety
demands.
Important: The use of low-quality video cables can distort the video
signal and influence diagnosis.
1. Check the impedance of the imaging board that produces the
video signals you want to connect. It must be 75 Ohm (just like the
input of the display). If not, the quality of the images on the display
will be inferior.
2. Connect the video output of the computer’s imaging board to the
video and sync inputs on the display’s rear panel. Use a proper
video cable. The video cable is not supplied with the display,
unless the display comes as part of a complete BARCO MeDis
system, that also contains an imaging board.
The inputs accept the following signals:
• Video with separate horizontal and vertical sync.
- The video cable has 3 wires.
- Connect the video signal to the connector Video {7}.
- Connect the horizontal sync signal to the connector HS/CS {8}.
- Connect the vertical sync signal to the connector VS {9}.
• Video with external composite sync.
- The video cable has 2 wires.
- Connect the video signal to the connector Video {7}.
- Connect the composite sync signal to the connector HS/CS {8}.
• Video with internal composite sync (sync on video).
- The video cable has 1 wire.
- Connect the video (with sync) signal to the connector Video {7}.
Notes:
• The video inputs cannot be connected in loop-through (daisy-
chain).
• The required video amplitude: 700 mV ± 3 dB.
• The required sync. amplitude: 500 mV.
Installation 14
b) Connection of data signals
The display can be controlled remotely by a computer through the
serial data bus. A typical example of this, is the MediCal software that
controls the display. MediCal runs on a PC that is connected through
the serial data bus. This PC is not necessarily the same computer as
the one that produces the video signals.
Unlike the video signals, it is possible to daisy-chain the serial data
bus. This means you can control different displays from one PC.
To connect the data signals:
1. Connect one end of the serial data cable to one of the PC’s COM
ports. If the COM port has a 25-pin connector, you will need to
use a D25-to-D9 interface connector. The cable and the interface
connector are both supplied with MediCal.
2. Connect the other end of the serial data cable to the Remote In
connector {6} on the display’s rear panel.
3. For a daisy-chain application, connect the Remote Out connector
{5} of the first display to the Remote In connector {6} of the next
display.
c) Connection of optical sensor
To calibrate the display, connect the optical
sensor to the Sensor connector {1} at the front.
Notes:
• The display supports the DTP 92 from X-Rite
as optical sensor.
• The optical sensor is not supplied by BARCO.
• Calibration can be done by means of MediCal
only.
• Always use the Ambient Light Shield
during calibration.
1
At the front, the sensor plug
is located under the bezel.
Installation 15
d) Connection of power
1. Power cord: Utilize a UL-listed detachable power cord, 3-wire, type
SJ or equivalent, 18 AWG min., rated 300 V min., provided with a
hospital-grade type plug 5-15P configuration for 120V application,
or 6-15P for 240V application.
2. Plug one end of the power cord into the rear of the display
(connector LINE {10}). Plug the other end into a grounded AC
power outlet. The display automatically adapts to the voltage. The
voltage range is: 100-240 VAC +/- 10%.
2.5 Positioning the display
The tilt and swivel base allows you to adjust the height and viewing
angle of the display to obtain an optimal viewing comfort.
Installation 16
Important considerations
• The best environment for diagnostic imaging is one with
controlled and dimmed ambient light. The human eye's
sensitivity depends on the ambient light strength. It is most
sensitive to small contrast changes (or subtle image details)
at limited ambient light levels.
• The best ambient light level, expressed in Lux, depends on
the application. An office illumination typically requires 500
Lux. A dimmed environment, like a softcopy room, requires
less than 100 Lux.
• Using your display in a controlled and dimmed environment
also extends its lifetime, because the display can operate at
limited brightness and contrast. These levels correspond to
the calibrated position in most cases.
• A controlled ambient light environment implies the ambient
light is as constant as possible. Cover windows to keep out
the daylight. Avoid switching the lights and viewing boxes on
and off. A consistent environment results in more image
consistency and less eye fatigue.
• Avoid reflections in the picture tube. Provide indirect lighting.
Don't place the displays in front of or close to a light source
like a window or viewing box, although this may be very
tempting. As a rule of thumb, keep viewing boxes at least
one metre (3 feet) away from the displays.
Operation 17
3. OPERATION: USER CONTROLS
Important:
The best way to adjust and control the display is by using MediCal,
which displays the ideal test patterns for correct adjustment. However,
in case you do not dispose of MediCal, you can control and adjust the
display by means of the built-in On-Screen Display (OSD).
3.1 Switching on / off
Power on/off
Press the Power button {11} on the rear panel to switch on the
display. The green LED at the front is off when the display is
operating.
If the display starts up with no image and the green LED {3} on, it is in
stand-by. This is the case when the display was powered down while
in stand-by.
Manual stand-by
To put the display in manual stand-by mode, press the control knob
{2} shortly. As a result, the green LED is ON continuously.
Note: You cannot switch the display in manual stand-by when the on-
screen display (OSD) is visible. In that case, first exit the OSD, and
then press the control knob to switch to stand-by mode.
To activate the display from stand-by mode, press the control knob
{2} again. As a result, the LED is switched off again.
Automatic power saving system (DPMS)
The power saving system, if switched on, can power down the display
when you don't use the computer that produces the video and sync.
signals for a while. In that way, the system reduces the display's
power consumption.
While the display is powered down, the picture tube will be blanked,
and the green LED on the front is blinking. In the last DPMS mode,
the LED will be on continuously.
The power saving system is switched off when the display is
produced. It can be switched on by a qualified technician.
Note: The power saving system can only work if the connected
imaging board supports power management.
For more details, please read Appendix A, "Background information".
Operation 18
3.2 Contrast and brightness control
Contrast and brightness can be controlled through the OSD menus.
To activate the OSD
Turn the control knob {4} from left to right or from right to left. As a
result, the OSD main menu appears.
Note: The control knob should turn over at least 30 degrees before
the OSD becomes visible.
Contrast
- Contrast CAL position
- Manual contrast adjustment
- Exit
Contrast control menu
MAIN MENU
- Contrast CAL
- Brightness CAL
- Status information
- Settings
- Adjustments
- Exit
The OSD main menu
The main menu indicates the current setting for contrast and
brightness.
This can be:
• CAL: The calibrated position. This is the preferred setting in a
controlled environment.
• ALC: For contrast only. This indicates the Ambient Light
Compensation (ALC) is on, and contrast is controlled
automatically, depending on the ambient light. ALC is an
option.
• <empty> When the main menu does not specify a setting,
contrast or brightness is manually set to a
different value than the calibrated position.
To put contrast in calibrated position
1 Turn the control knob to select Contrast in the OSD main menu.
2 Press the control knob shortly. The contrast control menu appears.
3 In the contrast control menu, select Contrast CAL position and
press the control knob shortly.
Operation 19
To control contrast manually
1 Turn the control knob to select Contrast in the OSD main menu.
2 Press the control knob shortly. The contrast control menu appears.
3 In the contrast control menu, select Manual contrast adjustment
and press the control knob shortly. The contrast scroll bar appears.
4 Turn the control knob until you have reached the desired contrast.
5 Press the control knob shortly or wait a few seconds to return to
the contrast control menu.
6 In the contrast control menu, select Exit and press the control
knob shortly to return to the main menu. Alternatively, you can just
wait a few seconds, and the OSD returns to the previous menu
automatically.
To put brightness in calibrated position
Brightness
- Brightness CAL position
-
Manual Brightness adjustment
- Exit Brightness control menu
1 Turn the control knob to select Brightness in the OSD main menu.
2 Press the control knob shortly. The brightness control menu
appears.
3 In the brightness control menu, select Brightness CAL position
and press the control knob shortly.
Contrast
Contrast scroll bar. The short stroke in the bar indicates
the calibrated position, the long stroke indicates the
current setting.
To control brightness manually
1 Turn the control knob to select Brightness in the OSD main menu.
2 Press the control knob shortly. The brightness control menu
appears.
3 In the brightness control menu, select Manual brightness
adjustment and press the control knob shortly. The brightness
scroll bar appears.
Brightness
Brightness scroll bar. The short stroke in the bar
indicates the calibrated position, the long stroke
indicates the current setting.
Operation 20
STATUS INFORMATION
Display Name: MGD 221MKII
Serial Number: 5114147
Mode Name: New mode
Mode H-frequency: 48.32 kHz
Mode V-frequency: 59.94 Hz
Software Version: V 1.01
Run time: 50 hours
White level: 215 cd/m2
Activity timeout 30s
SH compensation OFF
Actual H-frequency:72.02 kHz
Actual V-frequency: 75.00 Hz
- Exit
Status information menu
4 Turn the control knob until you have reached the desired
brightness.
5 Press the control knob shortly or wait a few seconds to return to
the brightness control menu.
6 In the brightness control menu, select Exit and press the control
knob shortly to return to the main menu. Alternatively, you can just
wait a few seconds, and the OSD returns to the previous menu
automatically.
3.3 Viewing Status information
You can view the status and actual settings of the display. You cannot
change them in the Status Menu. Changing the settings is reserved
for trained service staff only.
To view the status information
Turn the control knob to select Status information in the OSD main
menu.
The Status information menu appears. The only control in the menu is
Exit.
Explanation of the Status information menu items
Display Name:
This is the display type.
Serial Number:
This is the display's serial number.
Mode Name:
The currently selected scanning mode.
Mode H-frequency, Mode V-frequency:
These are the horizontal and vertical sync frequencies of the currently
selected scanning mode. These are the figures stored in the memory.
Operation 21
Software Version:
The internal software version.
Run time:
The total operating time since production, including burn-in time.
White level:
The display’s white level or light output after calibration, in calibrated
position.
Activity timeout :
This is the time, expressed in seconds, before the display interrupts
the data communication with the computer (e.g. during a computer
session with MediCal) if the computer does not respond anymore.
SH compensation (optoinal):
Indicates if Southern Hemisphere compensation is switched on or off.
Note: Southern Hemisphere compensation is an option. If the option
is not installed in the display, this line does not appear in the menu.
Actual H-frequency, Actual V-frequency:
These are the actual horizontal and vertical sync frequencies of the
connected video signal. They are measured constantly by the display.
3.4 Other adjustments
The main menu items Settings and Adjustments are reserved for
trained service staff and are therefore password - protected.
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